Trolley



R. RUEMELIN Jan. 1, 1935.

TROLLEY 2 Sheets-Sheet 1 Filed June 3, 1952 gwuc/wbom Richard N o. as f' ifi Jan. 1, 1935. R. RUEMELIN 1,986,413

TROLLEY Filed June 3, 1932 2 Sheets-Sheet 2 xmm " Richard ATRQ Q K, Rueinelin, Milwaukee, we;

My invention relates to a nozzlec-trolley for sand blast nozzles and is designed to provide a means of supporting the nozzle so thatl the operator can move it in the direction desired 5 Without having toc'arrythe weight in his hand.

w -Afeature'of my nozzle trolley resides in a means :of holding the sand blast nozzleireely movable with a circular motionand supported on the trolley so as to be easily" moved transv versely while the weight of the :nozzleiscarried by the trolley and theno'zzle is held virtually at right angles or square with the trolley and with the work being :sand blasted'in the cabinet to which the trolley is attached; 1 1. I I sand blasting it is desirable to provide a cabinet in which'the work which is to be sand blasted is positioned. A curtain'usually'closes the front of the sandiblast cabinet so that" the sand and dust will not come backtagainstithe 2'0" operator. I have illustrated onlya portion of the cabinet, mainly. a portion of the frame which supports the trolley and a portion through the self-closing shutters which close around the nozzleas it is'moved back and forth, keeping the cabinetclosed excepting for the point through which the nozzle projects in the self-closing shutter. j 1 {Ihe trolley is carried on anangle iron frame member with sets of wheels positioned so as to balance the trolley freely movable on the angle iron frame and the trolleyifs formed lwithwa" shieldonflthe side of the upper caster wheels whichhre "adjacent to the self closing'shutter' curtain. lfIhis shield is provided with an open- 55 mg through" which the nozzle projects and which permits the nozzle to be rotated by rotating motion by the operatork The nozzle supporting bracket of-the trolley spring counterbalanced making it easy for-theoperator to handle the nozzle. it j It is a feature to provide altrolleyyhaving ball bearing wheels on either side of the angleiron track of, the frame which, carries ,the trolley. This steadiesi the trolley, andholds it so that it 45" runs veryufreelyon thetrack Itis important that thetrolley; be held steady, because this trolley the means of support of the nozzle, It is also essential that the whole trolley with the ,nozzle,;move freely guided by the:hand of 56 the operator, -The trolley is'of a simple struc-' i to; bear against the top of the angle track memture effective as pointed: out in operation. U t

In the drawings forming part of this specificationzw. l l

Figure 1 illustrates the trolley in perspective,

55 supporting a sand blast nozzle as-associated with .formof track for supporting the trolley.

the angle. iron trackl which extends across a curtain and automatic closing shutter employed on thefront of'the' sandblastcabinet (the cabinet not being illustrated). I

t Figure 2 illustrates a frontlview' of the trolley lookingltoward' theinside of the shield which guards :the casters andhwhich has. the nozzle opening thereinl V -t i t. Figure-B is a side view of the trolley nozzle, showing a section through the shield and track which carries the trolleyg Y a Figure 4 is a section 'throughthe track and the upper and ,lower wheels of the vtrolley.

Figure 5 illustrates anrendjview of the trolley withthe shield removed and showing a different Figure Gris an end'vi'ew: of the shafts which support the lower wheels, showing the cam end Myttrolley A is adapted to .be supported upon the curtain B, only a DOI'tlOIlQOf, the curtain being illustrated. The ,curtain is provided with overlapping flexible self-closing shutter members 11 which extend towthelower frame member 12, being hungwith the bottomends free, while the uppergjends, not illustrated, are "secured to a portion of, the curtain B. 1;, w. x

The? track 310 and the frame 12 extend transversely' across the curtain ,-B so that the trolley A,may belmoved back and forth very freely on the track 10."

g The trolleyi'Aj is for the purposeof support: ing a sand blast-nozzle C which is connected to asandihose 13. The hose 13 leads from a source of, supply of sand and air and is adapted to force 3- the sand and air throughthe-nozzle C so as to proyidera sand blasting device which makes it more, easy for the operator to keep the nozzle C squarely pointed toward the work being sand blasted-in thewcabinet toiwhich the curtain B is attached on one side of the sand blast cabinet, The trolley A is, formed with aframe portion 14,-,whichhas a web-like nature and whichis re-, inforced around the outer'edge thereof by the flange 1 5; so as ,to strengthen; the frame 14 and, 4 to provide boss portions l6 in the corners of the same through which the various shafts pass to support the wheels which carry thetrolley A.

The upper wheels 17 arecarried by the short shaftslS which support the wheels 1'? in position ber 10. {The inner surfaces of the wheels 17 are V-shaped to fit the track 10 in a manner togive awgood substantial bearing between the wheel and the jtrack in theoperationr'ofthe trolley.

The wheels 18 form the upper supporting memhere for the frame 14 of the trolley A. I provide a shield D which is supported on the frame 14 between the wheels 1'7 by the rods 19 and which is formed with a backwardly extending flange 19' which extends along the top and down the sides thereof. The side portions of the flange 19 are cut at 20 to the shape of the upper surface of the track 10 and fit fairly close thereto, thus guarding the wheels l'l at the ends of the trolley. The shield D protects the wheels and track 10 against the rebound of any sand which might work back around the nozzle C as it projects, :3 through the shutters 11. A nozzle opening 21 is formed in the shield D which permits the nozzle-*- to project therethrough andalsopermits $118 101) erator holding the nozzle C to rotate it or move it with a rotary motion in sandblasting. It is" desirable that the nozzle C be held so that it may be easily moved back and forth and at the same time witha rotary motion, and my trolley A- accomplishes this-meansin a better waythan has been done heretofore; Q 7

The nozzle C is adapted'to be supported by the bracket arm 22 which is pivotally attached at 23 to the arm 24; while the arm 24 is pivoted on the shaft 25. I provide a counter-balancing spring 26 which is connected to the short lug 27 extendingfrom the bearingof the bracket arm 24 which extends around the shaft 25. This spring 26..is

se'cured'on its other end to the lug 28 projecting from'the' shaftbosszlfi on the opposite sides of the frame 14 to the boss 16 which carries, the shaft25. The bracket arm 22 is formed with a clamping jaw 29, one side of which is formed integral with the arm 22', while the other side 30 is-"pivoted'at 31 and is adapted to be held in clamped position to engage around the nozzle C by'the pin 32 which is carried by the flexible cord 3 33'. V Whenit is desired't'o remove the nozzle C from the jaw '29, the pin 32 is withdrawn-and the'portion 30ofthe jaw 29 may be moved so as to release thenozzle C. 1 l r V The trolley A rs held steady on the track 10 by the lower wheels 34. These wheels. 34 are positionedvirtually directlybelow the wheels l'land act to engage the under surfa'ce of the track 10,v being formed with engaging surfaces which fit the'shape-of-the=under surface of-the track 10. The shaft 25 supports one of the wheels 34 while the shaft 35 supports the other wheel 34, however; each of these" shafts 25 and-35' are virtually the-same andextend out beyond the boss'16, as illustrated in Figure 1, toprotect the nozzle supportingbracket 24 to be attached thereto. This provides means-so that the bracket 24' can be attached on either end of the trolley frame 14. As illustrated herein, the bracket 24 is attached to the-shaft25.

Each of the wheels'fl'l and 34 are'supported by ball bearings as illustrated in Figure 4, on the respective shafts 18, 25 and 35. The ball bearings in the wheels 17 are concealed i entirely within the wheelv by the cap 36 held by the screws 3'7. This permits the ball bearings to be packed in grease and concealed against any dust or dirt. I

Theshafts-25 and 35 are formed with a cam end 38 which carries the ball bearings'39 for supporting'the casters 34. The object of this cam end 38 is to offset the bearing 39 of the wheels 34 so that when either of'the shafts 25 or 35 are rotated in .-the boss 16, the wheels 34 1 may be brought into engagement with the under surface ,10fZof-thetrack'10. A cap 40 covers. the-e'ndof the shafts 25 and 35 and conceals the ball bearings 39 therein in the same manner as the cap 36. With the adjustment of the wheels 34 the trolley frame 14 may be adjusted so that the wheels 17 will bear against the top surface of the track 10 and the lower wheels 34 will bear against the under surface 10 of the track 10 with just suflicient freeness between the engagement of the wheels 17 and the wheels 34 to permit the trolley A to run freelyon the track 10. This provides a means, of adjusting the trolleyA so that'it may run true on the track 10 and with a minimum amount of play between the track and the trolley. H By this means the trolley is held steady and yet-runs freely movable upon the track 10. In Figure 51have shown the trolley A supported by a track 41 which is of a square formation incross-section rather than of an angle iron formation like the track 10 and in this case the trolley A is supported by the same kind of wheels onthe bottom as are used on the'top, namely, the wheels 1'7. The lower wheels, however, are adjustable as I have just set forth by the cam ends 38 on the shafts 35 or 25, so as to hold the trolley A steady on, the'track 41. v i

The. trolley A operates to'support the nozzle 0 so that the operator may engage the same and withronly a small efiortmove the nozzlein the direction desired. With thistrolley better work may be'done in sandblasting because it-not only supports the weight-of the sand blast noz zle'C. .but'hold's it square with the work counters balanced for free movement in small rotations and free to move transverselyaas' the operator desires. The curtain B, while onlyillustrated fragmentally, is movable up and. down and the trolley Amoves with the curtain for the reason that-the track 10 is supported to the frame 12; asillustrated at. 42, "on the ends of the track 10, as illustrated in Figure.1,:and thus the trol ley moves up and down whenthe curtain is adjusted in this manner. It will :thereforelbe. apparent that free movement ofth'e trolleyA is accorded: in any direction, so as towspeak; The trolley hasapeculiar formation which is of im'- portance in carrying out. the operationthereof and is shielded by the shield or guard D-which fits closely to the track 10 and permitsthe wheels 17 toiunffreely over the-track. The'ad justmeht of the support of the trolley'Ai's of'a simple nature and the trolley may be readily runoff of the tracker, the end thereof when it is not desired, it being easy to; slip the trolley back ontothe end' of the track 10 whenitfis wa I )In accordance with the patent statuteslhave eri'deavoredto describe the best embodiment of my invention and, its adaptation, use and struc ture should be considered within the-scope. ,of

thefollowing claims.

'Iclaim: H I 1. A trolley for sand blast nozzles having a frame; ball bearing wheels J mounted on said frame, a track on which saidwheels are adapted totravel, auxiliary wheel's mounted onsaid frame oppositely disposed to said first wheels to.-support said trolley on said track against rotation about the longitudinal axis of the track, a'cour'iter-bala'nced nozzle armpivotally connected to said frame having means for 'gripping' a nozzle, and'ashieldon said frame. having .an opening through which the nozzle is adapted to project extendingv in front-of 'saidlfirst wheels and; closelyto'said track to. protect the wheelsand the hands of the operator in the operation of the nozzle supported by said trolley. 2. A trolley for a sand blast nozzle in combination with a track comprising, wheels for a track upon which said wheels are adapted to run, means for holding said wheels engageable on either side of said track, and a sand blast nozzle support carried by said trolley to support the sand blast nozzle freely movable in relation to the trolley, and the trolley being free to be moved on said track by the hand of the operator.

4. A sand blast nozzle trolley in combination with a track for carrying said trolley comprising, a frame, wheels mounted on said frame, means for mounting some of said wheels to support said trolley against rotation about the longitudinal axis of said track, and a sand blast nozzle support carried by said frame and pivotally movable with relation thereto.

5. A nozzle trolley in combination with a track of other than round cross-section for supporting the trolley including, a frame, pairs of wheels adjustably positioned in relation to each other to engage around said track, the shape of said track acting to steady the frame of the trolley in relation to the track, a nozzle gripping means including pivotally supported bracket members mounted on said frame and adapted to hold the nozzle at substantially right angles with relation to said frame 6. A nozzle trolley in combination with an angle iron track including, pairs of wheels engageable on either side of said track, means for adjustably supporting some of said wheels,;the formation of said track acting to steady said trolley in relation to said track, andmeans for supporting a nozzle by said trolley freely pivotally movable with respect thereto to permit the nozzle to be moved along said track.

7. A trolley for a nozzle and the like including, a frame, wheels carried by said frame, some of said wheels being adjustable in relation to others, a track for said wheels, said wheels being arranged in amanner to engage on different sides of said track to steady the trolley byadjusting the adjustable wheels, and means for flexibly supporting a nozzle on said frame, freely movable with respect to said trolley in a plane at right angles to said trolley.

8; A nozzle trolley including, a frame, a track along which said trolley is adapted to travel,

wheels adjustably engageable with said track to hold said trolley steady on said track, a nozzle supporting bracket arm pivotally supported on said frame, a spring connecting said bracket arm and said frame for counter-balancing said arm, a second arm pivotally supported on said first arm and having a nozzle gripping jaw whereby a nozzle may be removably supported thereby.

9. A trolley including, a frame, a track for carrying said trolley having an angular engaging surface, pairs of wheels for engaging the sides of said track adjustably positioned in relation to said track to hold said frame steady in relation thereto, a flexible nozzle support, and means for securing said nozzle support to either end of said frame.

10. A trolley including, a frame, a track for supporting said trolley having angularly disposed faces, ball bearing wheels adjustable in relation to said track and adapted to support said frame spaced from said track, a flexible supporting arm including pivotally connected bracket members, one of said bracket members having a gripping jaw adapted to receive a member to be supported by said trolley whereby the member supported by said trolley may be carried with the trolley as a vehicle therefor to permit it to 'be moved longitudinally with the trolley and rotatably with respect to said trolley.

RICHARD RUEMELIN. 

